Following rumours that were picked up on by TechCrunch earlier today, it’s now been confirmed that Greg Pass, Twitter’s first Chief Technology Officer, is stepping down.

Pass has worked in a range of environments, including AOL and Summize, the company that was acquired by Twitter in 2008, and which he co-founded. Before becoming CTO at Twitter in 2010, he was vice-president for Engineering at the company, and in that role, he ensured that the Engineering division grew considerably.

Twitter has so far indicated that it is not looking for a direct replacement for him, and that his responsibilities will be devolved among other division heads.

Pass himself has been equally quiet on the matter; in fact, he hasn’t yet said a word about it. So it was down to Twitter spokesman Sean Garrett to explain that Pass doesn’t currently have any plans on the horizon. Well, none that they know of, at least.

Still, it looks like he will be missed at Twitter HQ; company co-founder Biz Stone tweeted today to acknowledge his years of service.

So, will Twitter wilt and droop without its CTO to champion and extol the cause of technology within the company? Probably not, no. It will be interesting, though, to see what Greg’s going to do next.